wilson



(No Model.)

H. L. WILSON. FURNACE GRATE.

No. 549,988. Patented Nov. 19, 1895.

Witnesses: Invent or. [Z i L/'i' Il /215021,,

Attorneys.

' UNITED STATES HARRY winner. on

GEFICE.

PENNSYLVANIA.

FURNAQEi-GRATE.

SBEQI EIQATIQMf n i g part of; Letters Batent Dfo. 549,988,, dated November 19,1895.

eniliaa nntirlt Apr l. :75. rear.

To. (Ll': whom zit may con/06mm Be. it known that 1;, HARRY Lena-new W1 1.-

SON, a citizen of" the. United States, and a resii= dent of Erie, county of Erie, and Stateof Pennsylvania, have. invented a. new: and use-.-

v ful Improvement inEurnace-Grrates, ofwhich the. following. is a full, clear, and exact description, reference. being had: to the; accompanying. drawings, making part of'thisspecr fication.

My invention relates.- to. a novel arrange -v ment or combination of rockinggrate bars, supplemental drop=grate, and. an adjustable; apron or cut-off with. adjustablelside bars, in which said: parts 1 are j ournaled, whereby the angleof inclination. ofthe-.g'rate-asa whole: can-.beadjusted as required-,and to the-con struction. of the rocking-grate-barswherebytheoperativefaces of the ribsthereotwhen in use are formed at opposingangles of'about forty-five. degrees eachv to a. horizontal plane, thereby increasingthe burning-or fire surface of the bars and also their dumping capacity or the openings betweenthe bars when they are rocked for clearing the grate of'ashesand clinkers.

It further relates to the means for pivoting and eifecting the adjustment of the grate side bars,cut-ofi, and drop-grate, and to certain details of construction and arrangement of parts, all as hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a perspective view of a grate partly broken away to show my improvements and with the adjacent side wall of the furnace removed for the same purpose. Fig. 2 shows several of the rocking grate-bars in section in the position they occupy in use; and Fig 3, a similar section showing the bars rocked downward to dump the ashes, &c. Fig. 4 shows the drop-grate in front and end elevations,and Fig. 5 similar views of the cut-off apron. Figs. 6 and 7 show side and plan views of the grate side bars; Fig. 8, side and face views of one of the angle-irons in which said side bars are pivoted, and Fig. 9 similar views of the angleirons permitting the adjustment of the grate. Fig. 10 is a perspective view showing the lower face of one of the rocking gratebars.

A indicates a portion of the brickwork of a furnace, and B the fire wall or bridge in rear of the furnace-grate, said brickwork and Serial 151:0, fiefiill'i @Immoiiaht gbri d'gewvalil being of any'usuali or suitable 5 construction.

@i O ind'icatethesidebars of the grate, one lo-fw-hich is: perforated at regular intervals i in its length to receiyethe-pi votsor journals at: one-v end' of the-rocking: grate-bars D and j inrear thereof for the trunnions or pivots of Ethecu=t=offi and'drop grate, theother bar 6 g havingsocketsor slotsc on-its upper face cor-- P respondin gly arranged-torecei e-the pivots' or journals at; the-other endsof the g rat'eliars, Ed'rzop-grate, and cut-oif for permitting the Eready removal and replacement of said parts. Theforward ends of the-side-bars Gand G are providedwithlaterally-projecting pins or gtrunni'ons e,- whi'ch are j our-naled in angular or LI -shaped irons or plates E, thearms of which are;- solidly set in the brickwork, and :neartheir-rear ends the bars (land 6 rest j upon pins'f," ad'justableup and downin-series of perforations in angular irons or plates F, also? set in the brickwork. By'thisarrangementthe' angleof; inclination of thebars G and- O, andtherew-ithof the grate'as-a whole, including the rocking grate-bars, the drop grate, and the cut-off, can be-adjusted as desired to adapt it to the varying conditions of draft and feed required.

The grate-bars D extend across between the bars 0 and O, and are provided at their ends with trunnions which rest in the bearings in said bars. The bars D, per 36, between the bars 0 and C may be of any suitable form; but the ribs (1 (:1 formed thereon are made preferably in form approximating a right-angled triangle with the right angle forming the apex of the ribs and bars and the hypotenuse thereof the base of the triangle, giving to the grate-bar as a whole the triangular form shown with its upper face composed of the oppositely-inclined sides of the angle each at an angle of about forty-five degrees to a horizontal longitudinally drawn line The journals at the ends of said bars are located preferably near the apex of the angle, giving to the top of the bars merelya rolling movement when the bars are rocked and causing the oppositely-inclined sides of opposing ribs to rest in close proximity to each other when in operative position, as shown in Fig. 2, and to swing away at their lower angles so as to leave wider spaces between them when the bars are rocked to discharge or dump the ashes and cinder, as shown in Fig. By this construction an increased burning surface is given to the coal on the grate-bars and the discharge of ashes and cinder is greatly facilitated. Each baris provided with a pendent lever-arm (Z for rocking it, and these several arms are connected with a longitudinallyarranged bar 1), which extends to the front of the furnace and may be operated by any suitable means.

G indicates a supplemental dumping or drop grate also extending across between the bars 0 and C at the rear lower ends thereof and provided with end journals g, pivoted in said bars. This grate, which maybe of any suitable construction, is preferably pivoted near its rear edge and is provided with a pendent arm or lever g, from which a rod q extends to the front of the furnace for controlling or dumping, resetting, and holding the grate. This grate is important as facilitating the d ischarge of any accumulation of ashes and cinder which may pass over and beyond the action of the rocking grate-bars.

H indicates a cut-off or apron pivoted at its ends in the bars C and C and preferably slightly below the plane of the rocking bars I) and just forward of the drop-grate G, as shown. Its ob j eet'is to cut oif the draft from the drop grate while the latter is being dumped, and it is controlled by means of a rod h, pivoted to a lug h 011 the apron and extending thence to the front of the furnace into convenient position to be operated by the attendant.

The drop-grate and cut-off being both pivoted in the bars 0 and O are adjusted therewith, and so always maintain the same working relation to the rocking grate-bars or main body of the grate.

Parts of the furnace notparticularly described may be constructed and arranged in any usual manner.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-- 1. The side bars or bearers carrying the main grate pivoted at their forward ends and made adjustable at their rear ends for varying the angle of the grate, in combination with the dumping, tail grate pivoted in said. rear ends and adjustable with the bearers and the main grate for maintaining its workin g relation thereto, for the purpose and substantially as described.

2. The combination with the adjustable side bars or bearers carrying the main grate, of the dumping,tail grate pivoted in said bars, and the draft damper or cut-oil? also pivoted in said side bars, at a point intermediate the main and dumping grates and adjustable therewith substantially as described.

3. In a f urnaee grate, the pivoted grate bars made substantially triangular in eross-seeti on. and having their fuel-bearing, upper surfaces composed of opposing inclines forming substantially right-angled apices to said bars, said bars being pivoted to rock in or nearly in the horizontal plane of said apices and with the lower angles of adjacent bars brought into close proximity, whereby a greatly increased burning surface is obtained for the fuel and said lower angles are made to swing away from each other when the bai are rock ed on their pivots, substantially as and for the purpose described.

In testimony whereof I have hereunto set my hand this 7th day of December, A. I). 18%.

HARRY L. WILSON. \Vitnesses:

G. 13. HAYES, I. ll. HoMAHoN. 

